What is Labour's defence announcement today?published at 07:01 British Summer Time 3 June
Labour leader Sir Keir Starmer will reaffirm his party's commitment to a "nuclear deterrent triple lock" as well as his ambition to increase defence spending to 2.5% of gross domestic product (GDP), a measure of the size of the economy.
He is expected to meet with forces veterans and a group of his party's candidates when he campaigns in the North West of England later today.
Prime Minister Rishi Sunak has made clear he wants to meet the 2.5% target by 2030 although Labour has so far declined to outline its timeline, only noting they would do so when economic conditions allow.
Labour says its nuclear deterrent triple lock involves: a commitment to construct the four new nuclear submarines in Barrow-in-Furness; maintaining Britain's continuous at-sea deterrent; and the delivery of all future upgrades needed for the submarines to patrol the waters.
The Vanguard-class submarines are due to be replaced by the bigger Dreadnought-class submarines in the 2030s. Between £31bn and £41bn has been set aside for the wider programme of replacing the Vanguard-class submarines, according to figures from the House of Commons Library.
Starmer has been attempting to shift perceptions of Labour's defence stance following the party's time under the leadership of Jeremy Corbyn, a long-standing critic of Nato and Trident.